Examlex
Use the following to answer questions : In a survey regarding job satisfaction, 574 in a sample of 934 female job-holders stated that they are satisfied with their jobs, while 500 in a sample of 755 male job-holders stated that they are satisfied with their jobs. The null hypothesis is that the proportions of all female and male job-holders who are satisfied with their jobs are the same. The alternative hypothesis is that the proportion of female job-holders who are satisfied with their jobs is lower than the proportion of male job-holders stated who are satisfied with their jobs. The significance level is 2.5%.
-What is the value of the test statistic,z,rounded to three decimal places?
NCE
Stands for the National Counselor Examination, a comprehensive assessment for those seeking counseling certification.
Norm-Referenced
A type of test that compares an individual's performance to a statistical norm or average performance of a defined group.
Standard Error of Measurement
The range of scores where we would expect a person’s score to fall if he or she took the instrument over and over again—in other words, where a “true” score might lie. It is calculated by taking the square root of 1 minus the reliability and multiplying that number by the standard deviation of the desired score.
Median
A measure of central tendency that is the middle score, or the score for which 50% of scores fall above and 50% fall below. In a skewed curve or skewed distribution of test scores, the median is generally the most accurate measure of central tendency since it is not affected by unusually high or low scores.
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